Vapour density Puns

Hello, I'm not very well versed in physics so I thought I would ask the question here.

A Supercavitating torpedo works by having a gas around the objects to increase speed in water, this reduces water friction with the torpedo.

Could the same thing be applied to an aerodyne? Instead of using gas could plasma be used to reduce friction with air?
If the electrons from the plasma cling to the aerodyne and repulse ions would that be the same?

Hi everyone,

I’m new to the game and have a background in physics.

No, this isn’t another complaint about thermodynamics. This is notoriously difficult to get right and the game is likely better off balancing it for gameplay rather than realism. We can always pretend the steam turbine has a huge radiator behind the screen somewhere…

What I don’t understand are the seemingly arbitrary things, like gas densities being out of whack.

For example: chlorine gas should realistically be denser than CO2, and oxygen should be denser than water vapour (steam).

It just seems odd considering the level of detail simulated by the game. I can’t believe they just forgot that oxygen and chlorine are diatomic gases?

This doesn’t ruin my experience, I’m just wondering if there are conscious decisions behind it or if it was ever discussed in the community over the years.

#Part 2:Material data

#Problem:

Being outside in a climate that our bodies cannot handle alone without the help of clothing and an understanding of therm o-regulation.

#Series Purpose: Understand our bodies, To assess against your full clothing system and put your understanding against your real world expectations and results for all scenarios. Knowing many of these things are already understood they are still outlined as a larger picture discussion.

Part 1: Part 1: our bodies, training and diet https://www.reddit.com/r/rocksolid/comments/mg5cyn/layering_choices_deep_dive_part_1/

Part 2: Material Data

Part 3: General theory of application of material in purpose

Part 4: Material choice per appendage and core

Preface: In part 2 we will look at each of the primary materials used in outdoor apparel. There is oftentimes contention with what materials work better at what position. With this part of the series I hope to dig in and sort out why certain people in certain areas and certain lineage tend to have an affinity to particular material in their kit!

Intentions: To expound on the different materials used in textiles and their properties. With knowing the information being able to use that and place them in a layering system to achieve an expected result.

#Topics: Material Structure Materia weight and moisture Data

NTS

1.5-3

3-4

4-5

6-8(hard/belay)

#Material Structure:

Getting into the structure of the fibers that go into the garment can get sticky. Lets start with natural fibers first because the material for the most part is what it is.

#Wool:

Top level: there is a cuticle and a cortical.. What does this mean for you when wearing

Cortex: Cuticle: Hydrophobic (Outside) plated in structure and waxy in structure making it not only hydrophobic but repel water.

Cortical: hydrophilic(Inside) attracts the moisture

Because the Cuticle is plated in structure it allows the inner Cortical hydrophilic material to pull the moisture vapor to the inside of the fiber.

https://www.sciencelearn.org.nz/resources/875-wool-fibre-properties

#Cotton:

Cotton has a similar structure to wool, walled structure around an inner lumin.

The structure is made up of 4 basic parts, The cuticle, primary wall, a secondary wall(s) and the lumin.

https://imgur.com/a/RIKTjDH

Cuticle: a thin film of fats and waxes.

Primary wall: the structure of the primary wall is open and unstructured

Secondary wall: this makes up the lion's share of the cotton fiber(

wall of text below, apologies in advance:

Like many settings i need a 'fantastical' fuel, for example 'Last Exile' has 'Claudia', basically a soluble high energy density fuel.

Since i decided oil and coal and other fossil fuels, are not available to exploit in my setting, at least, not on the scale our world has enjoyed (very minimal presence at best).

wood, charcoal, natural gases, alcohol and such are available though from various sources which is how things initially started and grew, the industrial revolution here was much more gradual and i didn't want to copy 'Last Exile' though their idea got me thinking.

In my setting SaW, or 'Stardust at War', i want an early to mid 20th century styled civilization and i didn't want to just abuse magic or some strange unobtanium ore and handwave away any issues in terms of power generation or utilization. while trying to figure things out i figured that on average renewable industries could supply wood, various gases, alcohol and charcoal as common base fuel types though i also needed something more energy dense and without fossil fuel products or magical ores that is a bit tougher to achieve.

With that said, in this setting nuclear fuel has been discovered and is being utilized with quite a few caveats for various reasons, but among them especially seeing it's roughly the 1950's in terms of technology and i do not want to copy the 'Fallout' setting either with their fusion cells and pocket nukes.

Without fossil fuels, magic ores or nuclear batteries the most advanced type of machinery and engine is naturally going to be water and wind powered as well as the steam engine, steam turbines and electrical.

internal combustion engines do exist but are rudimentary and run on aforementioned alcohol or (wood)gas while external combustion engines such as steam-trains have become more advanced then they would have been in our world.

knowing this i started thinking of a means to make steam reliably and in large quantities despite not having a natural high density fuel and i came up with the unholy combination of nuclear cores + steam boiler, but without using actual nuclear fuel, the "fuel rods" here being a consumable material alongside the water they evaporate.

i call the fuel rods to be used in that contraption "Valisnik Rods" which are a product made from what i call "Valisnik Crystals" which are in turn made from processed refined Quartz alloyed with Silicon Glass, read below for more details.

**

I don't want to step on anybody's toes here, but the amount of non-dad jokes here in this subreddit really annoys me. First of all, dad jokes CAN be NSFW, it clearly says so in the sub rules. Secondly, it doesn't automatically make it a dad joke if it's from a conversation between you and your child. Most importantly, the jokes that your CHILDREN tell YOU are not dad jokes. The point of a dad joke is that it's so cheesy only a dad who's trying to be funny would make such a joke. That's it. They are stupid plays on words, lame puns and so on. There has to be a clever pun or wordplay for it to be considered a dad joke.

Again, to all the fellow dads, I apologise if I'm sounding too harsh. But I just needed to get it off my chest.

hi guys imma just type the summary of things we need to know for chem o lvl's tmr (pls add on in the comments if i miss out something so i can edit this again) in hoping to help out others while also helping me to revise bcos typing notes is wayy faster than writing :) also this wld not be super precise bcos im just typing in the summary if not i'm literally typing a whole textbook here, but i'll try my best to put in all the infos that is important *totally not last minute*

kinetic particle theory

measurement and experimental techniques

burette (accurate), pipette (25.0 cm^(3) exact) and measuring cylinder (approximate) to measure liquid

beaker (not for measuring, but for mixing the wtv stuffs tgt inside)

beam balance and electronic balance to measure mass

stopwatch to measure time

thermometer to measure temperature

4 methods of gas collection

1. displacement of water (for gases that are not soluble(dissolvable) in water, regardless of density) examples : oxygen and hydrogen
2. downward delivery of gas (for gases that are more dense(heavy) than air, regardless of solubility) examples : carbon dioxide, hydrogen chloride and chlorine
3. using gas syringe (to measure volume of any gases)
4. upward delivery of gas (for gases that are less dense than air, regardless of solubility) examples : ammonia and hydrogen

3 types of drying agent

1. concentrated sulfuric acid (for acidic/neutral gases)
2. quicklime(calcium oxide) (for alkaline/neutral gases)
3. fused calcium chloride (for acidic/neutral/alkaline gases)

separation and experimental techniques

- filtration (for solid-liquid mixture and u want the solid)

- evaporation to dryness (for solid-liquid mixture and u want the solid)

- crystallisation (for solid-liquid mixture and u want the solid)

From what there is in the pilot you could see that there are 2 types of drones used.
In the story it’s made clear that worker drones do not need extra help for them to cool.
The murder drones need oil from the worker drones to survive thus making the killing part justifiable for the murder drones.

Important things to note are:

1. In the pilot you could see Khan (worker drone) sip from a cup. There is no vapour coming out of the cup. (suggesting that whatever is he drinking is cold) (time: 25:50)

2. Earlier in the video you can see a poster that says (Do not wash your hands) which is a suggestion that they have running water. (time: 4:02)

I think that worker drones have a 2 cycle system where they need to drink at least a little in order to fill up the water cycle after a part of water has evaporated from the heat.
There might be several reasons this cooling system arrangement might be used,
what I could think of is the density of the oil (the oil gets to tight areas) and it might be expensive. (JC Jenson would in my opinion want to reduce the costs per unit)
For the murder drones they might have a similar system (without the water) but what I think that the company might have added a filter that makes them loose this oil and eventually they need more.

Do your worst!

I'm surprised it hasn't decade.

For context I'm a Refuse Driver (Garbage man) & today I was on food waste. After I'd tipped I was checking the wagon for any defects when I spotted a lone pea balanced on the lifts.

I said "hey look, an escaPEA"

No one near me but it didn't half make me laugh for a good hour or so!

Edit: I can't believe how much this has blown up. Thank you everyone I've had a blast reading through the replies 😂

It really does, I swear!

Note: I take Pure Chem + Bio. All Physics tips are courtesy of my classmates and this community (https://www.reddit.com/r/SGExams/comments/qqr4pn/o_levels_pure_physicscombined_science_p1_tips/)

3rd last exam day till the end. Might be your last day for some. Either way, hope you had a good rest yesterday. Pure Physics starts at 8am, so make sure to head to school earlier.

Papers today:

- 6091/01 Physics P1 08:00 - 09:00

- 5076/01 Science (Phy/Chem) P1 14:00 - 15:00

- 5077/01 Science (Phy/Bio) P1 14:00 - 15:00

- 5078/01 Science (Chem/Bio) P1 14:00 - 15:00

Things to bring:

- entry proof

- NRIC

- thermometer

- TraceTogether token

- stationery (including pencil + eraser)

- calculator

Feel free to give any tips in comments.

Meta:

- Follow your teacher's advice

- Check subject code, especially for Combi Sci students

- Remember to shade your answers

- Read every question clearly and note keywords

- Pace yourself, aim for 1.5 min/mark

- Allocate time to check

- Note CLT, especially for Combi Chem

- Watch your time. Glance at a stopwatch or the classroom clock after every question if you're time-blind

- Take deep breaths when nervous, before starting the paper and before checking answers

- Stay confident, avoid second-guessing your answers if you're sure earlier

- Don't sleep during the paper itself

- Check you shaded what you intended to shade, write the options on the insert earlier

- It's possible to have multiple options consecutively, 5 'C' in a row for example, don't change your answer just because there's too many of the same options in the row (check base on qn itself)

- Use elimination method for MCQ

- First answer that looks correct isn't always the correct answer

- Skip first and come back later if you don't know the answer to a question

- Don't spend 10-15min on a question, if you might need more than 5min, better to skip first

- If you still don't know, pick a random answer, never leave any question blank

- For Combi Sci, don't neglect either booklet or subject

- Don't do mental calculations in your head, write down your workings if needed

- Using information = answer must be directly derived from qn

Phy (tips all from others, tailored for P1 Phy, some may be applicable to P1 Combi)

- Anticipate a

Buenosdillas

They’re on standbi

https://www.nature.com/articles/s41586-021-03873-w

the study ".... shows that water never condensed and that, consequently, oceans never formed on the surface of Venus. "

So if water never formed as a liquid on Venus, it had to stay in the atmosphere as a vapour. As a percentage of atmosphere, Water as a vapour has +97% greenhouse effect verses CO2's 3%. Increased water vapour in the atmosphere reduces atmospheric density, and we all know via the Ideal Gas Law, that when we reduce atmospheric density (with all other variables remaining equal), we raise temperature.

next the study rips the alarmists favorite 'proof' of co2 contributing to global warming in the past via the 'Faint Young Sun Paradox' a new one "Furthermore, this shows that the formation of Earth’s oceans required much lower insolation than today, which was made possible by the faint young Sun "

The Faint Young Sun paradox states that in the past the Early sun only shone with 70% of it's output today - meaning the Earth should've been much colder and liquid water frozen. The Alarmists use this to say 'but Earth was warmer in it's early history, and CO2 was in the 1000's ppm, so that proves co2 is a warming agent'

the (bad) idea that co2 is a warming agent? - getting more and more tenuous : now the FYS paradox may be explained, Runaway Greenhouse eg like Venus - explained. IGL - still triumphant lol

Pilot on me!!

Nothing, he was gladiator.

Dad jokes are supposed to be jokes you can tell a kid and they will understand it and find it funny.

This sub is mostly just NSFW puns now.

If it needs a NSFW tag it's not a dad joke. There should just be a NSFW puns subreddit for that.

Edit* I'm not replying any longer and turning off notifications but to all those that say "no one cares", there sure are a lot of you arguing about it. Maybe I'm wrong but you people don't need to be rude about it. If you really don't care, don't comment.

I‘m thinking of picking a flowerpot up, to sometimes ha e quicker sessions. One of the things I love about the volcano is temp stepping. I really feel I get the most from my herb by maximising cannibinoid intake this way.

I noticed with flowerpot videos, users are always trying to blow through the bowl for insane 1 or 2 hits and done. Clouds look insane, and I bet it hits you hard. I don’t really want to do this myself. I don’t feel like coughing all the time due to vapour density. And I don’t want to feel like I need to sleep due to the high temp range extraction.

Is it possible to temp step with FP? If so, how dificult is it?

When I got home, they were still there.

What did 0 say to 8 ?

" Nice Belt "

So What did 3 say to 8 ?

" Hey, you two stop making out "

I won't be doing that today!

Eric: I agree to the terms for creating Spirit Island game elements set forth in the FAQ.
tl;dr: A spirit of the water transpiring off plants. It has boosted reach to cover the island, but limited energy gain and limited starting attack ability. It has an innate power to heavily damage blighted/built-up lands, thematically turning the invaders' resource consumption and deforestation against them with drought and land degradation.
 
So I thought rainforests were just called that because they're found in humid region, but, apparently, they're responsible for a lot of rain!
Plants in the rainforest draw up water through their roots, and what they don't use is emitted into the air in a process called transpiration. Because of the sheer vegetation density of rainforests, this transpiration contributes...I don't actually know how much it contributes to worldwide rainfall, but it's a lot.
 
And that got me wondering...what if you had a spirit based around the concept of transpiration? A spirit of the groundwater drawn up through nature into the clouds?
In times of peace, they'd share their water with cloud and rain spirits, using a subtle hand to ensure life blossoms around the island and the (more environmentally conscious) Dahan have fertile fields.
But when invaders come, slashing and burning to make room for their crops and farm animals, this same subtle hand ensues the invaders face the consequences of their own blights, with droughts and degraded land bringing settlements to ruin.
 
Mechanically, I'm imagining these core concepts...perhaps let's call it Quiet Breath Of The Ferns & Reeds for now:
-Quiet Breath would start off in jungles and/or wetlands, the rich plant life serving as its medium. Its main elements would likely be a mix of water, leaf, air and earth.
-Its energy gain would be limited (it's a subtle spirit, after all), but it would have a special ability that enhances its range with powers, granting it greater influence over the whole island.
-Quiet Breath's starting power cards have small, benign effects; adding Dahan, Defends, weakening or skipping builds, giving range/energy boosts to other spirits, that sort of thing, doing little to attack the invaders but keeping the land pristine and fertile.
-When lands do become blighted, Quiet Breath's innate power specialises in turning that blight back on the invaders, causing d

[Removed]

This morning, my 4 year old daughter.

Daughter: I'm hungry

Me: nerves building, smile widening

Me: Hi hungry, I'm dad.

She had no idea what was going on but I finally did it.

Thank you all for listening.

You take away their little brooms

There hasn't been a post all year!

What always messed with me was that high pressure systems are warm, low pressure systems are cold. It’s intriguing since you would think hot/warm would mean low pressure due to the law as you increase temperature air density decreases and thus pressure decreases in normal conditions, but it truly seems and is reversed for weather high/low pressure systems… I totally get low pressure are higher density and push warm high pressure system up. But doesn’t seem to make sense semantically.

Why

It’s pronounced “Noel.”

After all his first name is No-vac

What, then, is Chinese rap?

Edit:

Notable mentions from the comments:

• Spanish/Swedish/Swiss/Serbian hits

• French/Finnish art

• Country/Canadian rap

• Chinese/Country/Canadian rock

• Turkish/Tunisian/Taiwanese rap